#include <pthread.h>

class Mutex
{
public:
    Mutex(pthread_mutex_t* lock)
        : _lock(lock)
    {}

    void lock()
    {
        pthread_mutex_lock(_lock);
    }
    void unlock()
    {
        pthread_mutex_unlock(_lock);
    }

    ~Mutex()
    {}
private:
    pthread_mutex_t* _lock;
};

class MutexGuard
{
public:
    MutexGuard(pthread_mutex_t* lock)
        : _mutex(lock)
    {
        _mutex.lock();
    }
    ~MutexGuard()
    {
        _mutex.unlock();
    }

private:
    Mutex _mutex;
};
